F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
F03B—MACHINES OR ENGINES FOR LIQUIDS
F03B17/00—Other machines or engines
F03B17/02—Other machines or engines using hydrostatic thrust
F03B17/04—Alleged perpetua mobilia
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Other Liquid Machine Or Engine Such As Wave Power Use
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